Valve fastening device

Abstract

The utility model discloses a valve fastening device which comprises a first fastening piece and a second fastening piece, the first fastening piece and the second fastening piece abut against the peripheral side face of a valve deck, the first fastening piece and the second fastening piece are oppositely distributed in the radial direction of the valve deck, and the first fastening piece and the second fastening piece are connected through a connecting piece. The first fastening piece and the second fastening piece can clamp the valve cover and keep relative fixation with the valve cover, and at least one of the first fastening piece and the second fastening piece is provided with the positioning block capable of being matched with the torque wrench, so that the small torque wrench can be matched with the positioning block and drive the positioning block to rotate, and the valve cover can be clamped by the first fastening piece and the second fastening piece. The valve cover is driven by the first fastening piece and the second fastening piece to rotate synchronously so as to pre-tighten the valve cover and the valve body, so that a narrow space can also provide a mounting space and a moving space for a small torque wrench, the pre-tightening force between the valve cover and the valve body is improved, and potential safety hazards in the operation process of the valve are reduced.

Description

Technical Field

[0001] This application relates to the field of valve technology, and more specifically, to a valve fastening device. Background Technology

[0002] Currently, due to the narrow space where some valves are located, the installation and movement space of large pre-tightening tools are limited during the pre-tightening process of the valve cover and valve body. This results in insufficient pre-tightening force between the valve cover and valve body, causing leakage problems between the contact surfaces of the valve cover and valve body, which leads to safety hazards during valve operation.

[0003] In summary, how to increase the preload between the valve cover and the valve body and reduce safety hazards during valve operation is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a valve fastening device that increases the preload between the valve cover and the valve body and reduces safety hazards during valve operation.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] A valve fastening device includes: a first fastener for abutting against the peripheral side of a valve cover; a second fastener for abutting against the peripheral side of the valve cover, and the second fastener and the first fastener are radially opposite to each other along the valve cover; a connector connecting the first fastener and the second fastener to clamp and fix the first fastener and the second fastener to the valve cover; at least one of the first fastener and the second fastener is provided with a positioning block for cooperating with a torque wrench.

[0007] In some embodiments, the first fastener is provided with a first abutting surface for abutting against the circumferential side surface of the valve cover; the second fastener is provided with a second abutting surface for abutting against the circumferential side surface of the valve cover.

[0008] In some embodiments, the first abutment surface has an arc-shaped structure, and the second abutment surface has an arc-shaped structure; the diameter of the first abutment surface is the same as the diameter of the second abutment surface, and the diameters of the first abutment surface and the second abutment surface are the same as the outer diameter of the valve cover.

[0009] In some embodiments, the first fastener has two first connecting holes, which are distributed radially along the valve cover; the second fastener has two second connecting holes, which are distributed radially along the valve cover; the connector connects the first connecting holes and the second connecting holes, and there are two connectors, each corresponding to one of the first connecting holes and the second connecting holes.

[0010] In some embodiments, the first connecting hole is a smooth hole, and the second connecting hole is a threaded hole; the connector includes a screw and a nut that cooperate with each other, and the screw is threadedly engaged with the threaded hole.

[0011] In some embodiments, the first connecting hole is a through hole, and the second connecting hole is a blind hole.

[0012] In some embodiments, the first connecting hole is a through hole, and the second connecting hole is a through hole.

[0013] In some embodiments, the first fastener is made of stainless steel; the second fastener is made of chromium vanadium alloy steel; and the connector is made of high-strength alloy steel.

[0014] In some embodiments, the positioning block is fixedly connected to the second fastener; the positioning block is located on the side of the second fastener away from the valve cover, and the positioning block is located in the middle of the second fastener.

[0015] In some embodiments, the positioning block has a quadrangular prism structure.

[0016] The valve fastening device provided in this application includes a first fastener and a second fastener. Both the first and second fasteners abut against the circumferential side of the valve cover and are radially distributed relative to each other along the valve cover. The first and second fasteners are connected by a connector, enabling them to clamp the valve cover and maintain relative fixation. At least one of the first and second fasteners is provided with a positioning block that can cooperate with a torque wrench. This allows a smaller torque wrench to cooperate with the positioning block and rotate it, thereby causing the valve cover to rotate synchronously through the first and second fasteners. This pre-tightens the valve cover and valve body, providing installation and movement space for a smaller torque wrench even in narrow spaces. This increases the pre-tightening force between the valve cover and valve body and reduces safety hazards during valve operation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the first fastener in the valve fastening device provided in the embodiments of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the second fastener in the valve fastening device provided in the embodiments of this application.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100 - First fastener, 101 - First abutting surface, 102 - First connecting hole;

[0022] 200 - Second fastener, 201 - Second abutment surface, 202 - Second connecting hole, 203 - Positioning block. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The terminology used in the following embodiments is for the purpose of describing specific embodiments only and is not intended to be a limitation of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise.

[0025] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0026] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0027] like Figure 1 and Figure 2 As shown in the embodiment of this application, the valve fastening device includes a first fastener 100 and a second fastener 200. The first fastener 100 abuts against the circumferential side of the valve cover, and the second fastener 200 abuts against the circumferential side of the valve cover. The second fastener 200 and the first fastener 100 are radially opposite to each other on the valve cover. A connector connects the first fastener 100 and the second fastener 200, so that the first fastener 100 and the second fastener 200 can be clamped and fixed to the valve cover. At least one of the first fastener 100 and the second fastener 200 is provided on the positioning block 203. The positioning block 203 is used to cooperate with a torque wrench. In this way, a smaller torque wrench can cooperate with the positioning block 203 and drive the positioning block 203 to rotate, so that the valve cover can be rotated synchronously by the first fastener 100 and the second fastener 200 to perform pre-tightening between the valve cover and the valve body. This allows for the installation and movement space of a smaller torque wrench even in narrow spaces, thereby increasing the pre-tightening force between the valve cover and the valve body and reducing safety hazards during valve operation.

[0028] like Figure 2 As shown, in some embodiments, the positioning block 203 is fixedly connected to the second fastener 200, and the positioning block 203 is located on the side of the second fastener 200 away from the valve cover and in the middle of the second fastener 200, so that the valve cover can be rotated to achieve pre-tightening by the cooperation of the torque wrench and the positioning block 203.

[0029] In some other embodiments, the positioning block 203 may also be fixedly connected to the middle of the first fastener 100, and this application embodiment does not limit this.

[0030] like Figure 2 As shown, the positioning block 203 has a quadrangular prism structure so that the positioning block 203 can cooperate with the torque wrench so that the torque wrench can drive the first fastener 100 and the second fastener 200 to rotate through the positioning block 203, thereby driving the valve cover to rotate synchronously.

[0031] like Figures 1-2 As shown, the first fastener 100 is provided with a first abutting surface 101 to abut against the peripheral side surface of the valve cover; the second fastener 200 is provided with a second abutting surface 201 to abut against the peripheral side surface of the valve cover, so as to clamp the valve cover with the first abutting surface 101 and the second abutting surface 201 to achieve relative fixation with the valve cover.

[0032] like Figures 1-2 As shown, the first abutment surface 101 has an arc-shaped structure, the second abutment surface 201 has an arc-shaped structure, and the diameter of the first abutment surface 101 is the same as the diameter of the second abutment surface 201. The diameters of the first abutment surface 101 and the second abutment surface 201 are the same as the outer diameter of the valve cover, so that the first abutment surface 101 and the second abutment surface 201 can fully fit with the peripheral side surface of the valve cover, thereby increasing the stability of the first fastener 100 and the second fastener 200 relative to the valve cover.

[0033] It should be noted that the central angle of the first abutment surface 101 and the central angle of the second abutment surface 201 of the arc-shaped structure are both slightly less than 180°. This ensures that after the first abutment surface 101 and the second abutment surface 201 abut against the circumferential side of the valve cover, there is a gap between the first fastener 100 and the second fastener 200. This allows the first abutment surface 101 and the second abutment surface 201 to abut against the circumferential side of the valve cover as tightly as possible, further improving the stability of the first fastener 100 and the second fastener 200 relative to the valve cover.

[0034] like Figures 1-2 As shown, the first fastener 100 has two first connecting holes 102, which are distributed radially along the valve cover; the second fastener 200 has two second connecting holes 202, which are distributed radially along the valve cover; and the first connecting holes 102 and the second connecting holes 202 are connected by two connectors, which correspond one-to-one with the first connecting hole 102 and the second connecting hole 202.

[0035] like Figures 1-2As shown, the first connecting hole 102 is a smooth hole, and the second connecting hole 202 is a threaded hole; and the connector includes a screw and a nut that cooperate with each other, and the screw can be threadedly engaged with the threaded hole so that the screw passes through the first connecting hole 102 and is threadedly connected to the second connecting hole 202, and the nut is threadedly engaged with the screw to realize the connection between the first fastener 100 and the second fastener 200.

[0036] In some embodiments, such as Figures 1-2 As shown, the first connecting hole 102 is a through hole, and the second connecting hole 202 is a blind hole. During the connection process, the screw is first passed through the first connecting hole 102 and the first fastener 100 is engaged with the valve cover. Then, the screw is threaded into the second connecting hole 202, and the screw is gradually screwed into the second connecting hole 202 until the first fastener 100 and the second fastener 200 clamp the valve cover. Then, the nut is threaded into the screw, so that the nut is engaged with the side of the first fastener 100 away from the first abutment surface 101, thereby achieving relative fixation of the first fastener 100 and the second fastener 200 with the valve cover.

[0037] In some other embodiments, the first connecting hole 102 is a through hole and the second connecting hole 202 is also a through hole, so that the screw passes through the first connecting hole 102 first and then engages with the threaded connection of the second connecting hole 202. The fact that the second connecting hole 202 is provided with a through hole makes the processing of the second fastener 200 more convenient.

[0038] To improve the connection strength of the fastening device, the first fastener 100 is made of stainless steel and the second fastener 200 is made of chromium vanadium alloy steel, so as to improve the connection strength between the first fastener 100 and the second fastener 200 and the valve cover; the connector is made of high-strength alloy steel to improve the load-bearing performance of the connector, so as to improve the stability of the fastening device in the process of driving the valve cover to pre-tighten, and further improve the pre-tightening force between the valve cover and the valve body.

[0039] In the operation of the valve fastening device provided in this application embodiment, the first fastener 100 and the second fastener 200 are first abutted against the circumferential side of the valve cover. Then, the bolt is passed through the first connecting hole 102 and threaded into the second connecting hole 202 until the first fastener 100 and the second fastener 200 clamp the valve cover and fix it relative to the valve cover. Then, the torque wrench cooperates with the positioning block 203. By rotating the positioning block 203 with the torque wrench, the valve cover is driven to rotate synchronously through the first fastener 100 and the second fastener 200 to perform pre-tightening between the valve cover and the valve body. This allows for the installation and movement space of a small torque wrench even in narrow spaces, thereby increasing the pre-tightening force between the valve cover and the valve body and reducing safety hazards during valve operation.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A valve fastening device, characterized in that, include: The first fastener (100) is used to abut against the circumferential side of the valve cover; The second fastener (200) is used to abut against the circumferential side of the valve cover, and the second fastener (200) and the first fastener (100) are distributed radially opposite to each other along the valve cover. A connector that connects the first fastener (100) and the second fastener (200) to clamp and fix the first fastener (100) and the second fastener (200) to the valve cover; At least one of the first fastener (100) and the second fastener (200) is provided with a positioning block (203), which is used to cooperate with a torque wrench.

2. The valve fastening device according to claim 1, characterized in that, The first fastener (100) is provided with a first abutting surface (101), which is used to abut against the circumferential side of the valve cover; The second fastener (200) is provided with a second abutment surface (201) for abutting against the peripheral side of the valve cover.

3. The valve fastening device according to claim 2, characterized in that, The first contact surface (101) has an arc-shaped structure, and the second contact surface (201) has an arc-shaped structure; The diameter of the first abutting surface (101) is the same as the diameter of the second abutting surface (201), and the diameters of the first abutting surface (101) and the second abutting surface (201) are the same as the outer diameter of the valve cover.

4. The valve fastening device according to claim 1, characterized in that, The first fastener (100) has two first connecting holes (102), and the two first connecting holes (102) are distributed sequentially along the radial direction of the valve cover. The second fastener (200) has two second connection holes (202), and the two second connection holes (202) are distributed sequentially along the radial direction of the valve cover; The connector connects the first connecting hole (102) and the second connecting hole (202), and there are two connectors, each corresponding to the first connecting hole (102) and the second connecting hole (202).

5. The valve fastening device according to claim 4, characterized in that, The first connecting hole (102) is a smooth hole, and the second connecting hole (202) is a threaded hole; The connector includes a screw and a nut that cooperate with each other, and the screw is threaded into the threaded hole.

6. The valve fastening device according to claim 5, characterized in that, The first connecting hole (102) is a through hole, and the second connecting hole (202) is a blind hole.

7. The valve fastening device according to claim 5, characterized in that, The first connecting hole (102) is a through hole, and the second connecting hole (202) is a through hole.

8. The valve fastening device according to claim 1, characterized in that, The first fastener (100) is made of stainless steel; The second fastener (200) is made of chromium vanadium alloy steel; The connector is made of high-strength alloy steel.

9. The valve fastening device according to claim 1, characterized in that, The positioning block (203) is fixedly connected to the second fastener (200); The positioning block (203) is located on the side of the second fastener (200) away from the valve cover, and the positioning block (203) is located in the middle of the second fastener (200).

10. The valve fastening device according to any one of claims 1-9, characterized in that, The positioning block (203) has a quadrangular prism structure.

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